Edgar Lanting is an experienced IT engineer who specializes in database technology and operating systems. In his free time, he loves to experiment with development and really likes Apple's new programming language, Swift. He currently works as an engineer at the Dutch file transfer company WeTransfer and lives near Amsterdam with his wife and two dogs.

Sergio Martínez-Losa Del Rincón lives in Spain. He is a software engineer and serial entrepreneur. He always liked to write technical documents and enjoys programming in several languages.

He is always learning new programming languages and facing new challenges. Currently, he is creating applications and games for iPhone, Macintosh, Android, Google Glass, and OUYA. You can see part of his work at https://itunes.apple.com/artist/sergio-martinez-losa-del-rincon/id380348699.

Vladimir Pouzanov is a systems engineer and embedded enthusiast. He has spent countless hours hacking different mobile hardware, porting Linux to various devices that were not supposed to run it, and toying around outside the iOS sandbox. He has also been a professional iOS consultant and has been developing applications based on iOS ever since the first Apple iPhones became available. Later on, he switched his professional interest to systems engineering and cloud computing, but he still keeps a close eye on the mobile and embedded world.